CVE-2026-24040
Description
A flaw was found in jsPDF. When jsPDF is used in a concurrent environment, such as a Node.js web server, a race condition in the addJS method can lead to cross-user data leakage. This occurs because a shared variable used to store JavaScript content can be overwritten by simultaneous requests. As a result, a PDF generated for one user may contain sensitive JavaScript content intended for another user, leading to unauthorized information disclosure.
Statement
This MODERATE impact vulnerability in jsPDF affects applications utilizing the addJS method in a concurrent server-side Node.js environment. A shared module-scoped variable can lead to cross-user data leakage when multiple PDF generation requests occur simultaneously, potentially embedding sensitive data from one user into another's PDF. This primarily impacts server-side deployments where jsPDF is used to generate documents concurrently.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | 4.8 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | High | High | N/A |
| Privileges Required | None | None | N/A |
| User Interaction | None | None | N/A |
| Scope | Changed | Unchanged | N/A |
| Confidentiality | High | Low | N/A |
| Integrity Impact | Low | Low | N/A |
| Availability Impact | None | None | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
NVD: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Understanding the Weakness (CWE)
Integrity,Confidentiality,Other
Technical Impact: Modify Application Data; Read Application Data; Alter Execution Logic
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